IME (input method editor) support for Aura, part 3 of 3: Use ui::InputMethod in ash.

ui/aura/root_window.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_AURA_ROOT_WINDOW_H_
 #define UI_AURA_ROOT_WINDOW_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop.h"
 #include "base/task.h"
 #include "ui/aura/aura_export.h"
 #include "ui/aura/cursor.h"
 #include "ui/aura/focus_manager.h"
 #include "ui/aura/window.h"
 #include "ui/base/events.h"
 #include "ui/gfx/compositor/compositor.h"
 #include "ui/gfx/compositor/layer_animation_observer.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/point.h"
 
 namespace gfx {
 class Size;
 }
 
 namespace ui {
+class InputMethod;
 class LayerAnimationSequence;
 class Transform;
 }
 
 namespace aura {
 
 class RootWindowHost;
 class RootWindowObserver;
 class KeyEvent;
 class MouseEvent;
@@ skipping 15 matching lines @@
   }
 
   ui::Compositor* compositor() { return compositor_.get(); }
   gfx::Point last_mouse_location() const { return last_mouse_location_; }
   gfx::NativeCursor last_cursor() const { return last_cursor_; }
   StackingClient* stacking_client() { return stacking_client_.get(); }
   Window* active_window() { return active_window_; }
   Window* mouse_pressed_handler() { return mouse_pressed_handler_; }
   Window* capture_window() { return capture_window_; }
   ScreenAura* screen() { return screen_; }
+  void set_input_method(ui::InputMethod* input_method) {
+    input_method_ = input_method;  // does not own |input_method|.
+  }
+  ui::InputMethod* input_method() const { return input_method_; }
 
   void SetStackingClient(StackingClient* stacking_client);
 
   // Shows the root window host.
   void ShowRootWindow();
 
   // Sets the size of the root window.
   void SetHostSize(const gfx::Size& size);
   gfx::Size GetHostSize() const;
 
@@ skipping 155 matching lines @@
 
   // The capture window. When not-null, this window receives all the mouse and
   // touch events.
   Window* capture_window_;
 
   Window* mouse_pressed_handler_;
   Window* mouse_moved_handler_;
   Window* focused_window_;
   Window* touch_event_handler_;
 
+  ui::InputMethod* input_method_;
+
   DISALLOW_COPY_AND_ASSIGN(RootWindow);
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_ROOT_WINDOW_H_